.head {
	padding: 20px 0;
	margin: 0 auto;
	width: 1000px;
	line-height: 30px;
}
.logo {
	height: 30px;
	float: left;
	margin-left: 20px;
	color: #fff
}
.logo img {
	height: 30px;
}
.menu {
	float: left;
	margin-right: 20px;
}
.menu li {
	display: inline-block;
	list-style-type: none;
	margin-left: 50px;
}
.menu a {
	color: rgb(255, 255, 255);
	font-size: 16px;
	text-decoration: none;
}
.head_right {
	float: right;
}
.head_right a {
	color: #fff;
	margin-right: 20px;
}